Email client or provider? For client I’d go with thunderbird for provider mailbox.org or Tuta, or maybe proton (but mainly the first two).
As the other comment mentioned, this isn’t the community, I’d check out [email protected] (asklemmy also may not be the right community, it’s explicitly not a support community)
I’d like to know if this is just a firmware update or unfixable, but sadly this seems just an ad rather than news